The coerce callback allows you to adjust the value if its outside the boundaries without throwing an exception.
NET property is read directly from a private member in your class, whereas the value of a Dependency Property is resolved dynamically when calling the method that is inherited from Dependency Object. This baseclass defines a key, value dictionary that contains local values of dependency properties.When you set a value of a dependency property it is not stored in a field of your object, but in a dictionary of keys and values provided by the base class Every time you access a dependency property, it internally resolves the value by following the precedence from high to low. The key of an entry is the key defined with the dependency property. NET property wrapper, it internally calls to access the value.As a very basic example of So C, think about HTML, CSS and Java Script, where all these technologies have a well-defined purpose.HTML defines the content structure, CSS defines content presentation and Java Script defines how the content interacts and behaves with the user.Maybe you ask yourself, why not just use a normal . One important reason is that you cannot set triggers on normal . Creating a read only property is similar to creating a regular Dependency Property. This key should be stored in a private or protected static readonly field of your class.
The key gives you access to set the value from within your class and use it like a normal dependency property.To set the value of an attached property, add an attribute in XAML with a prefix of the element that provides the attached property. But an much easier way is to get the Thank you for spending the time to prepare this article.I have already read the MSDN articles on dependency properties as well as Pro WPF and Silverlight MVVM: Effective Application Development with Model-View-View Model (Apress 2010), so understanding your article was easy for me.The name of the Dependendy Property must always end with ... If you are using Visual Studio, you can type The change notification callback is a static method, that is called everytime when the value of the Time Property changes.The new value is passed in the Event Args, the object on which the value changed is passed as the source.The idea is to make sure each concern has a single, well-defined purpose and to find a balanced way to separate these features and concepts into different modules.